21000403655

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{84047}}^1$

素因数の和:84140

約数の個数: 48

約数和(自身を含む): 32193745920

約数和(自身を除く): 11193342265

約数列:

[1, 5, 7, 11, 35, 55, 59, 77, 121, 295, 385, 413, 605, 649, 847, 2065, 3245, 4235, 4543, 7139, 22715, 35695, 49973, 84047, 249865, 420235, 588329, 924517, 2941645, 4622585, 4958773, 6471619, 10169687, 24793865, 32358095, 34711411, 50848435, 54546503, 71187809, 173557055, 272732515, 355939045, 381825521, 600011533, 1909127605, 3000057665, 4200080731, 21000403655]

約数ペア:

[(1, 21000403655), (5, 4200080731), (7, 3000057665), (11, 1909127605), (35, 600011533), (55, 381825521), (59, 355939045), (77, 272732515), (121, 173557055), (295, 71187809), (385, 54546503), (413, 50848435), (605, 34711411), (649, 32358095), (847, 24793865), (2065, 10169687), (3245, 6471619), (4235, 4958773), (4543, 4622585), (7139, 2941645), (22715, 924517), (35695, 588329), (49973, 420235), (84047, 249865)]